Fishing tool



June 9, 1925.

G. w. KELLER FISHING TDOL Filed ocr. a,` '1923 l fnven zf 01.

Patented June 9, 1925. Y

rse-i417 Fre FSHING T0013.

Application tiledI @atelier 8, 1923.\"Seria1 No. 66751-26;V

4T0l all LU/71mm e'tmay concern:-

Be1 it known' that lf, Grenen WILLIAM llnLnn-n;-` ak citizen ot thelUnited: Sta-tes,y residing at@ Coalinga; inthe county ofA Fresno andState of California, have invented eertain new and useful ImprovementsinFishing: l-"ooldfof: which thetellowin-g isi-aY speciiic'ation.-

Many types of iishing: tools have been devised for usein connection.vwith drilling. operations, among'some of the well lnofwnbeing therat-trap and others,A but these fishing toolshave been extremely limitedin their use, and in som-e`- eases,` due to their nonpositive lockingoperation, have-caused serious damage in the holes by releasing: therecovered material-before the same has been withdrawn from: theA hole.

My present invent-ion' relates to an improved type of fishingv tool.which isY manually set prior to lowering in the hole. On encountering.the object sought for,` the mechanism. of the tool is tripped causingthe slips or jaws to be' forcibly moved into engta-.gement with thearticlel and securely embrace. the A same: By myv present invention, Iam` able7 .by the'interchan'ge ofy slips lto employ one type otY tool inthe recovery ot' pump rods,` no matter whether the same break above; at,orfbelow their joint union,

and by making devices ot various diameters :un enabled4 toA provideY afishing tool. which whenfsprung by Contact with the object in the hole,will tightly grip the' object, andthe weight ot the objectl willi causea l lirmer grip to be obtained thereon: duringfitsY removal from?Y thehole:A

Tlh'e invention consists primarily iny a. mechanically actuated trigger'held' plunger mounting engaging devices guided by convergingnvalls',andzbetween which tliearticle tol be recovered is received as' thedevice is lowered thereover, thereV being4 provided a trigger torreleasing by the action of: the

' article to' bey recovered sol that the mechanica-l plunger can' beactuated by the spring; to engage the: Walls of the article.-

lilith: the! above mentioned and other objectsin' view,- the inventionconsistsin.v the novel construction and combination of; partehereinafter. described; illustrated in the accompanyin'g draw-ings5 andset forth i'nv the claiinshereto appended`,.it being understood U sortedto without departing Jfrom the spirit or sacrificing. any of theadvantages oi' the invention To more full-y' comprehend the invention,referenceis: directed to the; accompanying drawings,` wherein Fig. Lisaviewin side elevation partly in section et? one` embodiment ol' myinvention, thisembodiment being, designed .particularly orjtherecoveryot pump'V o r sucker rods.

Fig 2 is` a vertical sectional view illustrating.l the v parts in theirset position- Fig..w 3-is al sectional view Online 3-3-of F 2illustrating theparts in their set. position;

Fig. e! is a view i'n" detail of the trigger support-.and the triggerand the-trigger release-collar with thefparts iii-.their set position:

Fig..- V5v is.' viewsimilar to Fig.l 3 with theypartsl in theirreleasedv orsprnng position.

Fig. 6 is a sectional view ony line 6-6of 'ig/4:' Y

Figi'.- 7 is a sectional v iew om line 7-7 of Figo.

' Fig; Sisar view in det-ail elevationot the trigger, Itrigger supportand trigger release collar.4

. vIn the drawings, wherein like characters or reference, designatelcorresponding. partsl l indicates au tubular body pro-videdin its y'sidewall; near its lower end with longitudinally' disposed opposingovalapertures 2, the inner wall ol.. the. body at a point below saidlapertures being: tapered inwardly as.y

at 3'toward'l itslowerend, and-the.t extreme bottom wall' ot thelowerend ofiv thev body isi inwardly beveled as at 4.- The. upper end of'Sthegtubular body l car-ries a cage type. couplii'ig., or attachingimember 5 ofi any desired constructionenabling. the upperend ot' thebod/yI toibe secured-to. a. device for lowering thev bodyinto= andremoving. theI same vtrom theA hole.4 Detachably secured at their. upperends,l as at1 6,-to the;l

lowerend olea-.plunger 6", andone gnidedin each" oval aperture 2,. arethe: slips ot spring: material.l Theouter surfaces` of the lower endsot. the slips. a re disposed-- onthe inner side of the; wall! of. thetubular body and operate onthet'apered wall surfaces 3 at the: lower:end thereof. The inner Jfaces off the lower endsfofitheslifpsarecorrugated or.y toothed as at 8v to provide: engaging4 surfacce Withinthev tnbular'body 1f betweenHx the coupling 5 and the upper end of theplunger 6 is a coiled spring 9, the tendency of which is at all times toforce the plunger 6 downwardly in the tubular body.

Disposed concentrically within the tubular body 1 at a point near thelower ends of the apertures 2, is a cylindrical trigger' support 10, thelower end of which is held in position within the body by a pin 1rextending transversely through said body as in the drawings, and theupper end of said support is received within a cylindrical guide opening12 formed centrally of the lower end of the plunger 6. The triggersupport 10 is provided with a longitudinally disposed trigger receivingslot 13 opening at the upper end of the support. A trigger 14 is mountedto be received within said slot 13, and is fulcrumed to the support asat 15. The free end of the trigger is notched as at 16 to engage thelower end of the plunger 6, and the coiled spring 17 positioned betweenthe inner face of the trigger and the base of the slot 13 tends to forcesaid trigger outwardly at all times. Mounted for free reciprocationwithin the tubular body at a point below the trigger support is atrigger release collar 18 provided with a central bore 19 for receivingthe lower end of the support 10. The collar is longitudinally slotted asat 20 to permit its movement relative to the pin 11, as hereinafterdescribed.

`The device being assembled as in the drawings, the same operates in thefollowing 1^ manner :-VVhen it is desired to employ this tool on afishing job, the operator sets the tool by forcing the plunger 6upwardly against the tension of the spring 9 until such time as thetrigger 16 engages beneath the lower end of the plunger 6', as in Fig. 3of the drawings. This setting may be accomplished by the operatorholding the tubular Vbody 1, and with the end of a suitable implementreceived in the depression 21 exerting pressure on the plunger to forcethe same upwardly in the body 1. With the suitable lowering deviceattached to the coupling 5 the tool is lowered 'into the hole thedesired distance, and as the lower end of the body encounters the part22 to be recovered, the lower beveled end wall l of the body will guidethe part into the lower end of said body, at which time the lowering ofthe body may continue. VAs the body continues to lower, the upper end ofthe part 22 to be recovered contacts with the lower end of the triggerrelease collar 18 and causes the same to ride upwardly on the triggersupport 10, bearing against the outer face of the plunger retainingtrigger 14E.` The continued upward movement of the collar 18 forces thefree end of the trigger into its slot 13 and ultimately releases thesame from engagement with the lower end of the plunger 6. When thisaction takes place, the spring 9 actuates the plunger 6 in a downwarddirection, and causes the lower ends of the slips 7 in their movementover the tapering walls 3 to converge and tightly engage the oppositefaces of the article 22 received within the lower end of the body 1.rlhis operation causes a positive engaging of the slips with the body tobe recovered, and when it 'is desired to withdraw the body from the holethe tapering of the wall 3 causes a firmer engagement of the faces 8 ofthe slips with the slot of the body 22, thus locking the body within thelower end of the fishing tool.

It has been `discovered that with the present tool, broken pump orsucker rods may be readily recovered, and if the opportrinity is notpresent for withdrawing the broken part the pumping action may becontinued by using the fishing tool as a coupling between the sectionwithin the hole and the tubing connected with the fishing tool Vthroughthe coupling 5.

I claim:

1. A fishing tool comprising a tubular body open at one end and providedadjacent said end with downwardly converging slip guiding surfaces, aplunger recipro# cably mounted within said body, a pair of slips carriedby said plunger with their free ends engaging said guiding surfaces, aspring within said tubular body engaging` said plunger for forcing theslips carried thereby over said surfaces toward each other into partengaging position, a trigger mounting member within said body, a plungerengaging trigger pivotally carried by said mounting member, Va triggerreleasing member movable into engagement with the trigger to withdrawthe same from engagement with the plunger to permit said spring to forcesaid blocks into article engaging position, and a trigger releasingmember reciprocably mounted on said trigger mounting member and adaptedfor engaging the trigger to withdraw the same from engagement with saidplunger to permit said spring to force said slips into article engagingposition. i

2. A fishing tool comprising a tubular body open at one end and providedwithin its length with opposing longitudinally disposed slots, said bodyon its inner surface at its lower end provided with downwardlyconverging slip guiding surfaces, a plunger reciprocably mounted withinthe upper end of said body, a pair of slips detachably carried at oneend by said plunger with their free ends engaging said guiding surfaces,a spring within the upper end of said body and bearing on said plunger,a trigger mounting member held centrally within said body, a triggerpivotally carried thereby for engaging said plunger, and triggerreleasing means disposed withlll) CTL

in said body above its open end movable longitudinally within said bodyto release said trigger from engagement with the plunger.

3. A fishing tool comprising a tubular body open at one end and providedwith downwardly converging slip guiding surfaces, a plunger'reciprocably mounted within said body, slips carried by the plunger andengaging said guiding surfaces, a spring engaging the plunger forforcing the slips carried thereby over said surfaces toward each otherinto part engaging position, a trigger' mounting member, a plungerengaging trigger, and a reciprocably mounted trigger releasing memberfor engaging the trigger' to withdraw the same from engagement with saidplunger to permit said spring to force said slip into article engagingposition, said structure being mounted within said tubular body.

l. A fishing tool comprising a tubular body open at one end and providedwith downwardly converging slip guiding surfaces formed on its innerperiphery, said body being provided with opposing cut-out portions inits wall, a plunger reciprocably mounted within the body, slips carriedby the plunger and disposed with their upper ends guided in said cutoutportions, and with their lower ends bearing on said converging guidingsurfaces, means accessible through the upper ends of said cut-outportions for detachably securing the slips to the plunger, a springcoiled in the upper portion ot' the tubular body and bearing on theplunger, and a releasable trigger below the plunger for releasablyholding the plunger in said position.

5. A fishing tool comprising a tubular body open at one end and providedinteriorly at its other end with downwardly converging slip guidingsurfaces, a plunger reciprocably mounted within the upper prtion of thebody, a spring within the upper portion of the body bearing on theplunger to force the same downwardly within the body toward its openend, slips detachably secured at their upper ends to the body, a triggermounting member carried by the body below the plunger, a trigger carriedby the mounting member for normally engaging beneath the plunger to holdthe same upwardly, and a tubular member disposed axially within thelower end of the body for reciprocative movement on the trigger'mounting member to withdraw the trigger from engagement with theplunger.

6. A fishing tool comprising a tubular body open at one end, a plungerreciprocably mounted within said body, slips within saidbody andoperated by the plunger, a spring for operating the plunger, a trigger,a trigger mounting member, a plunger engaging the trigger, and anarticle actuated trigger releasing member, said structure being mountedwithin said tubular body.

In testimony whereof I have signed my name to this specification.

GEORGE WILLIAM KELLER.

